From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id F23DFCA0ED1 for ; Mon, 18 Aug 2025 13:39:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: Content-Type:In-Reply-To:From:References:Cc:To:Subject:MIME-Version:Date: Message-ID:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=uzSGXcgBrZqLN7Lscf67nTyRB2ky7FSMom0S+y8UBHo=; b=CDI5LisvZzQn6wcyl4iCwVswOk Y8pc7Dak85Je/UJJI3jhwIgu5MFPdDpvFRLHkhKWs/egzzwsKe1fDphpfw8Y43n+qHF8dWAUZQYNf AcGlBHMEI0tKBEiL8qcP/1mBk9XKWGV4z27Y+b5JdsOt8L4n9ozTK/7EXamFBC7RA+a6s1lie88o3 4uxee22cbaHWvitekLekSnd87cGan9AMiKZKrDjRAIgkzdur07/1F8zRKHS6+iVZ61aFqQbAUpQDc KYHJLqBRoGkgdsOE4v7SEu4tH9vN/rdrtkykgmxDh/nTHCN3eZUgR0od10FIzybE+SeRegu8GdkjZ uhp2q0Qw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1uo04n-00000007WkS-2Xml; Mon, 18 Aug 2025 13:39:05 +0000 Received: from dfw.source.kernel.org ([139.178.84.217]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1unvYI-00000006yaz-0o4N for linux-arm-kernel@lists.infradead.org; Mon, 18 Aug 2025 08:49:15 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by dfw.source.kernel.org (Postfix) with ESMTP id 7B1805C5603; Mon, 18 Aug 2025 08:49:13 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 540DDC4CEEB; Mon, 18 Aug 2025 08:49:06 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1755506953; bh=rhlsxxRk4EuwzcNd++izNC2AdIT+M5hU7gqXnfBxExo=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=hRdnMIdqWRyqAgLEgNUSk4MAO2h1laN0DdNxmQoagjStkv8R1rR7Vitf/Svgki16B gN8Lw/8IdQs45h3awI0Yt2pghON+9UkJTYDFznKAnYUcOGIeHbtBQqDwtzzEYCkW6f +bKhYEsMbS7GoCzsFEQTbBgEBq2aJiMUma363h4u4WfkuwtbHMdFMDbDvuqTPbmjSl sK0/ON/lGK9/Nv4eGbw32IEj0DMbnVyxkgqcg2OULyAGE60qjOPYNRq08IQqqloBz7 Yhs390atpNtI5EuiG6u5Kbs3iZjnyrNOqpYfyfgOpZ0ETdDPwqGgfx7YQ9CIkbpMq2 paCBSYfSny+6Q== Message-ID: Date: Mon, 18 Aug 2025 10:49:04 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v2 12/12] media: fsd-csis: Add support for FSD CSIS DMA To: Inbaraj E , mturquette@baylibre.com, sboyd@kernel.org, robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, s.nawrocki@samsung.com, s.hauer@pengutronix.de, shawnguo@kernel.org, cw00.choi@samsung.com, rmfrfs@gmail.com, laurent.pinchart@ideasonboard.com, martink@posteo.de, mchehab@kernel.org, linux-fsd@tesla.com, will@kernel.org, catalin.marinas@arm.com, pankaj.dubey@samsung.com, shradha.t@samsung.com, ravi.patel@samsung.com Cc: linux-clk@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, alim.akhtar@samsung.com, linux-samsung-soc@vger.kernel.org, kernel@puri.sm, kernel@pengutronix.de, festevam@gmail.com, linux-media@vger.kernel.org, imx@lists.linux.dev, linux-arm-kernel@lists.infradead.org References: <20250814140943.22531-1-inbaraj.e@samsung.com> <20250814140943.22531-13-inbaraj.e@samsung.com> From: Krzysztof Kozlowski Content-Language: en-US Autocrypt: addr=krzk@kernel.org; keydata= xsFNBFVDQq4BEAC6KeLOfFsAvFMBsrCrJ2bCalhPv5+KQF2PS2+iwZI8BpRZoV+Bd5kWvN79 cFgcqTTuNHjAvxtUG8pQgGTHAObYs6xeYJtjUH0ZX6ndJ33FJYf5V3yXqqjcZ30FgHzJCFUu JMp7PSyMPzpUXfU12yfcRYVEMQrmplNZssmYhiTeVicuOOypWugZKVLGNm0IweVCaZ/DJDIH gNbpvVwjcKYrx85m9cBVEBUGaQP6AT7qlVCkrf50v8bofSIyVa2xmubbAwwFA1oxoOusjPIE J3iadrwpFvsZjF5uHAKS+7wHLoW9hVzOnLbX6ajk5Hf8Pb1m+VH/E8bPBNNYKkfTtypTDUCj NYcd27tjnXfG+SDs/EXNUAIRefCyvaRG7oRYF3Ec+2RgQDRnmmjCjoQNbFrJvJkFHlPeHaeS BosGY+XWKydnmsfY7SSnjAzLUGAFhLd/XDVpb1Een2XucPpKvt9ORF+48gy12FA5GduRLhQU vK4tU7ojoem/G23PcowM1CwPurC8sAVsQb9KmwTGh7rVz3ks3w/zfGBy3+WmLg++C2Wct6nM Pd8/6CBVjEWqD06/RjI2AnjIq5fSEH/BIfXXfC68nMp9BZoy3So4ZsbOlBmtAPvMYX6U8VwD TNeBxJu5Ex0Izf1NV9CzC3nNaFUYOY8KfN01X5SExAoVTr09ewARAQABzSVLcnp5c3p0b2Yg S296bG93c2tpIDxrcnprQGtlcm5lbC5vcmc+wsGVBBMBCgA/AhsDBgsJCAcDAgYVCAIJCgsE FgIDAQIeAQIXgBYhBJvQfg4MUfjVlne3VBuTQ307QWKbBQJoF1BKBQkWlnSaAAoJEBuTQ307 QWKbHukP/3t4tRp/bvDnxJfmNdNVn0gv9ep3L39IntPalBFwRKytqeQkzAju0whYWg+R/rwp +r2I1Fzwt7+PTjsnMFlh1AZxGDmP5MFkzVsMnfX1lGiXhYSOMP97XL6R1QSXxaWOpGNCDaUl ajorB0lJDcC0q3xAdwzRConxYVhlgmTrRiD8oLlSCD5baEAt5Zw17UTNDnDGmZQKR0fqLpWy 786Lm5OScb7DjEgcA2PRm17st4UQ1kF0rQHokVaotxRM74PPDB8bCsunlghJl1DRK9s1aSuN hL1Pv9VD8b4dFNvCo7b4hfAANPU67W40AaaGZ3UAfmw+1MYyo4QuAZGKzaP2ukbdCD/DYnqi tJy88XqWtyb4UQWKNoQqGKzlYXdKsldYqrLHGoMvj1UN9XcRtXHST/IaLn72o7j7/h/Ac5EL 8lSUVIG4TYn59NyxxAXa07Wi6zjVL1U11fTnFmE29ALYQEXKBI3KUO1A3p4sQWzU7uRmbuxn naUmm8RbpMcOfa9JjlXCLmQ5IP7Rr5tYZUCkZz08LIfF8UMXwH7OOEX87Y++EkAB+pzKZNNd hwoXulTAgjSy+OiaLtuCys9VdXLZ3Zy314azaCU3BoWgaMV0eAW/+gprWMXQM1lrlzvwlD/k whyy9wGf0AEPpLssLVt9VVxNjo6BIkt6d1pMg6mHsUEVzsFNBFVDXDQBEADNkrQYSREUL4D3 Gws46JEoZ9HEQOKtkrwjrzlw/tCmqVzERRPvz2Xg8n7+HRCrgqnodIYoUh5WsU84N03KlLue MNsWLJBvBaubYN4JuJIdRr4dS4oyF1/fQAQPHh8Thpiz0SAZFx6iWKB7Qrz3OrGCjTPcW6ei OMheesVS5hxietSmlin+SilmIAPZHx7n242u6kdHOh+/SyLImKn/dh9RzatVpUKbv34eP1wA GldWsRxbf3WP9pFNObSzI/Bo3kA89Xx2rO2roC+Gq4LeHvo7ptzcLcrqaHUAcZ3CgFG88CnA 6z6lBZn0WyewEcPOPdcUB2Q7D/NiUY+HDiV99rAYPJztjeTrBSTnHeSBPb+qn5ZZGQwIdUW9 YegxWKvXXHTwB5eMzo/RB6vffwqcnHDoe0q7VgzRRZJwpi6aMIXLfeWZ5Wrwaw2zldFuO4Dt 91pFzBSOIpeMtfgb/Pfe/a1WJ/GgaIRIBE+NUqckM+3zJHGmVPqJP/h2Iwv6nw8U+7Yyl6gU BLHFTg2hYnLFJI4Xjg+AX1hHFVKmvl3VBHIsBv0oDcsQWXqY+NaFahT0lRPjYtrTa1v3tem/ JoFzZ4B0p27K+qQCF2R96hVvuEyjzBmdq2esyE6zIqftdo4MOJho8uctOiWbwNNq2U9pPWmu 4vXVFBYIGmpyNPYzRm0QPwARAQABwsF8BBgBCgAmAhsMFiEEm9B+DgxR+NWWd7dUG5NDfTtB YpsFAmgXUF8FCRaWWyoACgkQG5NDfTtBYptO0w//dlXJs5/42hAXKsk+PDg3wyEFb4NpyA1v qmx7SfAzk9Hf6lWwU1O6AbqNMbh6PjEwadKUk1m04S7EjdQLsj/MBSgoQtCT3MDmWUUtHZd5 RYIPnPq3WVB47GtuO6/u375tsxhtf7vt95QSYJwCB+ZUgo4T+FV4hquZ4AsRkbgavtIzQisg Dgv76tnEv3YHV8Jn9mi/Bu0FURF+5kpdMfgo1sq6RXNQ//TVf8yFgRtTUdXxW/qHjlYURrm2 H4kutobVEIxiyu6m05q3e9eZB/TaMMNVORx+1kM3j7f0rwtEYUFzY1ygQfpcMDPl7pRYoJjB dSsm0ZuzDaCwaxg2t8hqQJBzJCezTOIkjHUsWAK+tEbU4Z4SnNpCyM3fBqsgYdJxjyC/tWVT AQ18NRLtPw7tK1rdcwCl0GFQHwSwk5pDpz1NH40e6lU+NcXSeiqkDDRkHlftKPV/dV+lQXiu jWt87ecuHlpL3uuQ0ZZNWqHgZoQLXoqC2ZV5KrtKWb/jyiFX/sxSrodALf0zf+tfHv0FZWT2 zHjUqd0t4njD/UOsuIMOQn4Ig0SdivYPfZukb5cdasKJukG1NOpbW7yRNivaCnfZz6dTawXw XRIV/KDsHQiyVxKvN73bThKhONkcX2LWuD928tAR6XMM2G5ovxLe09vuOzzfTWQDsm++9UKF a/A= In-Reply-To: <20250814140943.22531-13-inbaraj.e@samsung.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250818_014914_323793_5ED5B48D X-CRM114-Status: GOOD ( 30.92 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On 14/08/2025 16:09, Inbaraj E wrote: > FSD CSIS IP bundles DMA engine for receiving frames from MIPI-CSI2 bus. > Add support internal DMA controller to capture the frames. > > Signed-off-by: Inbaraj E I commented on order of patches and got more surprise - final driver patch after DTS defconfig. It's really wrong order. > --- > MAINTAINERS | 8 + > drivers/media/platform/samsung/Kconfig | 1 + > drivers/media/platform/samsung/Makefile | 1 + > .../media/platform/samsung/fsd-csis/Kconfig | 18 + > .../media/platform/samsung/fsd-csis/Makefile | 3 + > .../platform/samsung/fsd-csis/fsd-csis.c | 1709 +++++++++++++++++ > 6 files changed, 1740 insertions(+) > create mode 100644 drivers/media/platform/samsung/fsd-csis/Kconfig > create mode 100644 drivers/media/platform/samsung/fsd-csis/Makefile > create mode 100644 drivers/media/platform/samsung/fsd-csis/fsd-csis.c > > diff --git a/MAINTAINERS b/MAINTAINERS > index bd62ad58a47f..1e17fb0581d2 100644 > --- a/MAINTAINERS > +++ b/MAINTAINERS > @@ -3334,6 +3334,14 @@ S: Maintained > F: Documentation/devicetree/bindings/media/samsung,s5p-mfc.yaml > F: drivers/media/platform/samsung/s5p-mfc/ > > +ARM/SAMSUNG FSD BRIDGE DRIVER TESLA FSD BRIDGE DRIVER (because ARM/foo are only SoC maintainer entries) > +M: Inbaraj E > +L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers) Replace above list with samsung-soc list. > +L: linux-media@vger.kernel.org > +S: Maintained > +F: Documentation/devicetree/bindings/media/tesla,fsd-csis-media.yaml > +F: drivers/media/platform/samsung/fsd-csis/fsd-csis.c > + > ARM/SOCFPGA ARCHITECTURE > M: Dinh Nguyen > S: Maintained > diff --git a/drivers/media/platform/samsung/Kconfig b/drivers/media/platform/samsung/Kconfig > index 0e34c5fc1dfc..4cebe2ae24a3 100644 > --- a/drivers/media/platform/samsung/Kconfig > +++ b/drivers/media/platform/samsung/Kconfig > @@ -4,6 +4,7 @@ comment "Samsung media platform drivers" > > source "drivers/media/platform/samsung/exynos-gsc/Kconfig" > source "drivers/media/platform/samsung/exynos4-is/Kconfig" > +source "drivers/media/platform/samsung/fsd-csis/Kconfig" > source "drivers/media/platform/samsung/s3c-camif/Kconfig" > source "drivers/media/platform/samsung/s5p-g2d/Kconfig" > source "drivers/media/platform/samsung/s5p-jpeg/Kconfig" > diff --git a/drivers/media/platform/samsung/Makefile b/drivers/media/platform/samsung/Makefile > index 21fea3330e4b..fde1b9626713 100644 > --- a/drivers/media/platform/samsung/Makefile > +++ b/drivers/media/platform/samsung/Makefile > @@ -1,6 +1,7 @@ > # SPDX-License-Identifier: GPL-2.0-only > obj-y += exynos-gsc/ > obj-y += exynos4-is/ > +obj-y += fsd-csis/ > obj-y += s3c-camif/ > obj-y += s5p-g2d/ > obj-y += s5p-jpeg/ > diff --git a/drivers/media/platform/samsung/fsd-csis/Kconfig b/drivers/media/platform/samsung/fsd-csis/Kconfig > new file mode 100644 > index 000000000000..99803e924682 > --- /dev/null > +++ b/drivers/media/platform/samsung/fsd-csis/Kconfig > @@ -0,0 +1,18 @@ > +# SPDX-License-Identifier: GPL-2.0-only > +# > +# FSD MIPI CSI-2 Rx controller configurations > + > +config VIDEO_FSD_CSIS VIDEO_TSLA_FSD_CSIS > + tristate "FSD SoC MIPI-CSI2 media controller driver" > + depends on VIDEO_DEV && VIDEO_V4L2_SUBDEV_API > + depends on HAS_DMA > + depends on OF OF seems unneeded dependency But you miss ARCH_TESLA_FSD instead. > + select VIDEOBUF2_DMA_CONTIG > + select V4L2_FWNODE > + help > + This is a video4linux2 driver for FSD SoC MIPI-CSI2 Rx. Tesla FSD > + The driver provides interface for capturing frames. > + > + To compile this driver as a module, choose M here. The module > + will be called fsd-csis. > + > diff --git a/drivers/media/platform/samsung/fsd-csis/Makefile b/drivers/media/platform/samsung/fsd-csis/Makefile > new file mode 100644 > index 000000000000..eba8c0c6a7cc > --- /dev/null > +++ b/drivers/media/platform/samsung/fsd-csis/Makefile > @@ -0,0 +1,3 @@ > +# SPDX-License-Identifier: GPL-2.0-only > + > +obj-$(CONFIG_VIDEO_FSD_CSIS) += fsd-csis.o > diff --git a/drivers/media/platform/samsung/fsd-csis/fsd-csis.c b/drivers/media/platform/samsung/fsd-csis/fsd-csis.c > new file mode 100644 > index 000000000000..74f46038d506 > --- /dev/null > +++ b/drivers/media/platform/samsung/fsd-csis/fsd-csis.c > @@ -0,0 +1,1709 @@ > +// SPDX-License-Identifier: GPL-2.0-only > +/* > + * Copyright (c) 2022-2025 Samsung Electronics Co., Ltd. > + * https://www.samsung.com > + * > + * FSD CSIS V4L2 Capture driver for FSD SoC. "Tesla FSD" in both places > + */ > + > +#include > +#include > +#include > +#include > +#include > +#include > +#include How can you depend on OF if there is no single OF header? > + > +#define FSD_CSIS_DMA_COHERENT_MASK_SIZE 32 > +#define FSD_CSIS_NB_MIN_CH 2 > +#define FSD_CSIS_NB_VC 4 > +#define FSD_CSIS_MEDIA_NUM_PADS 2 > +#define FSD_CSIS_NB_DMA_OUT_CH 8 > +#define FSD_CSIS_MAX_VC 4 > +#define FSD_CSIS_NB_CLOCK 2 > +#define FSD_CSIS_NB_OF_BUFS_ON_DMA_CHANNELS 2 > +#define FSD_CSIS_DMA_LINE_ALIGN_SIZE 128 > +#define FSD_CSIS_DMA_CH_OFFSET 0x100 ... > + > +static int fsd_csis_probe(struct platform_device *pdev) > +{ > + struct device *dev = &pdev->dev; > + struct fsd_csis *csis; > + int ret = 0; > + int irq; > + > + csis = devm_kzalloc(dev, sizeof(*csis), GFP_KERNEL); > + if (!csis) > + return -ENOMEM; > + > + csis->dev = dev; > + csis->info = of_device_get_match_data(dev); > + > + csis->dma_base = devm_platform_ioremap_resource(pdev, 0); > + if (IS_ERR(csis->dma_base)) > + return PTR_ERR(csis->dma_base); > + > + irq = platform_get_irq(pdev, 0); > + if (irq < 0) > + return irq; > + > + ret = devm_request_irq(dev, irq, > + csis_irq_handler, IRQF_SHARED, pdev->name, csis); Please align these (checkpatch --strict) > + > + ret = fsd_csis_clk_get(csis); > + if (ret < 0) > + return ret; > + > + pm_runtime_enable(dev); > + if (!pm_runtime_enabled(dev)) { That's odd code. Why? > + ret = fsd_csis_runtime_resume(dev); Even more questions why? > + if (ret < 0) > + return ret; > + } > + > + platform_set_drvdata(pdev, csis); > + > + ret = fsd_csis_enable_pll(csis); > + if (ret) > + return ret; > + > + ret = fsd_csis_media_init(csis); > + if (ret) > + return ret; I think you miss clean up of csis->pll completely. Just use devm_clk_get_enabled and convert everything here to devm. > + > + ret = fsd_csis_async_register(csis); > + if (ret) > + goto err_media_cleanup; > + > + return 0; > + > +err_media_cleanup: > + fsd_csis_media_cleanup(csis); Also this... > + > + return ret; > +} > + > +static void fsd_csis_remove(struct platform_device *pdev) > +{ > + struct fsd_csis *csis = platform_get_drvdata(pdev); > + > + fsd_csis_media_cleanup(csis); > + > + v4l2_async_nf_unregister(&csis->notifier); > + v4l2_async_nf_cleanup(&csis->notifier); > + v4l2_async_unregister_subdev(&csis->subdev.sd); > + > + if (!pm_runtime_enabled(csis->dev)) > + fsd_csis_runtime_suspend(csis->dev); > + > + pm_runtime_disable(csis->dev); > + pm_runtime_set_suspended(csis->dev); > +} > + > +static const struct of_device_id fsd_csis_of_match[] = { > + { .compatible = "tesla,fsd-csis-media", }, > + { }, > +}; > + > +MODULE_DEVICE_TABLE(of, fsd_csis_of_match); > + > +static struct platform_driver fsd_csis_driver = { > + .probe = fsd_csis_probe, > + .remove = fsd_csis_remove, > + .driver = { > + .name = FSD_CSIS_MODULE_NAME, > + .of_match_table = of_match_ptr(fsd_csis_of_match), Drop of_match_ptr, it is not really correct. > + .pm = &fsd_csis_pm_ops, > + }, > +}; > + > +module_platform_driver(fsd_csis_driver); > + > +MODULE_DESCRIPTION("FSD CSIS Driver"); > +MODULE_AUTHOR("Inbaraj E "); > +MODULE_LICENSE("GPL"); > + Best regards, Krzysztof